That's a stupid question. Roller Coasters are very safe. None can be considered "most dangerous"
rock and roller coaster
Most famous roller coaster ride: Space Mountain Most famous non-coaster ride: probably Pirates of the Caribbean or It's A Small World
The old Coney Island roller coaster.
The word "coaster" in roller coaster refers to the method of travel. Roller coaster trains are not powered. Instead they coast from one hill to the next on a set of wheels (or rollers), hence the name.
It is called Kraken and was the first floorless roller coaster in Florida
Flume of Doom
the name of that roller coaster is called viper. it is located in six flags magic mountain
The newest roller coaster for Cedar Point is GateKeeper. It opened in May, 2013.
Ultimate
its veloxrotaphobia
Most likely you are talking about Final Destination 3.
the name of the first fourth dimensional roller coaster is called X2. it is located in six flags magic mountain